Double hung window sash structure



United States 2,696,545 Patented Dec. 14, 1954 DUUELE HUNG WINDOW SASHSTRUCTURE Richard W. Edmonds, Columbus, Ga. Application February 18,1950, Serial N0. 145,035

Claims. (Cl. -522) This invention relates to a window of a type in whichsashes slide vertically in a frame, employing friction between sash andframe as a means of maintaining the sash at any desired elevation withinthe frame, without using counterweights or other balancing means.

Another object is to seal the sashes in the frame against the passage ofair currents when the window is closed.

Another object is to prevent the sashes from rattling in the frame.

Another object is to provide uniform operation in varyiug temperaturesand degrees of humidity.

Another object is to permit ready removal of the sashes from the frame,and replacement thereof, without structural alteration, and to provide alock against such removal by unauthorized persons.

To accomplish these and other objects, this invention provides improvedweather tight channel friction members free of rattle, improved meansfor maintaining them in proper relation to the sashes, and foreasilvadjusting at any time the amount of friction between the channelmembers and frame, and whereby the sashes may be removed readily fromthe frame, and while the window is closed will lock themselvesautomatically against being removed.

Other objects and advantages of the invention will appear more clearlyfrom the following description and drawings in which:

Fig. l is a frontal elevation of a window embodying the invention.

2 is a longitudinal section on the line 22 in Fig. 3. 3 is a crosssection of a window showing both sashes in a lowered position.

Fig. 3a is an enlarged fragmentary section on the line 3a3a in Fig. 2.

Fig. 4 is a partial frontal view with parts broken away.

Fig. 5 is a cross section on the lines 5-5 in Fig. 4.

Fig. 6 is a longitudinal section of a sash, along the line 6-6 in Fig.4.

Fig. 7 is a partial end view of a sash showing an alternativeconstruction.

Fig. 8 is similar to Fig. 4, showing an alternative construction.

Fig. 9 is a section along the line 99 in Fig. 8.

Fig. 10 is a section along the line 10ll0 in Fig. 8.

Fig. ll is an enlarged fragmentary section of a sash showing analternative construction.

Upper and lower sashes 1 and 2 are adapted to slide ertically in a frame3. Movement of the lower sash 2 is guided by jambs 4 and 6, the partingstrips 9 and 11, and inner stops 12 and 13. Both of the sashes 1 and 2are limited in their upper movement by a head 14 and sill 16.

As the construction of this invention applied to the upper sashcorresponds to its application to the lower sash, the construction willbe described particularly only with respect to the lower sash 2, inorder to avoid unnecessary repetition.

A. metal channel member 17 consisting of a base portion 2% and resilientsides 21, fits on a stile 18 of the sash. The resilient sides 21 of thechannel member 17, grip the stile 18 lightly to prevent rattling of thestile within the channel member. and to prevent passage of air betweenthe stile and the sides of a channel member. The stile has notches 19 toaccommodate the sides 21 of the channel member 17.

A resilient member 22 comprising a metallic leaf spring is interposedunder compression between the stile 18 and the channel member 17, seatedin a mortise 20 in the stile 18, adapted to impel the channel member 17snugly against the jamb 4, and to maintain a clearance 15 between thechannel member 17 and the stile 18, slightly greater than the projectionof the parting strip 11 and the inner stop 13 from the jamb 6. Analternative form of resilient member 60 (Fig. 8), as explainedhereinafter more particularly in connection with another embodiment ofthis invention, has been used with excellent results with the sashconstruction here shown.

it has been found to be preferable for 11, the inner stop 13, and theouter stop 3 to project from the jamb 6 somewhat less than is standardpractice, in order to keep within convenient limits the necessaryclearance 15 between the stile 13 and the base portion 20 of the channelmember 17. On the other hand, the parting strip 9, the inner stop 12,and the outer stop 7 preferably extend farther from the jamb 4 than theparting strip 11, the inner stop 13, and the outer stop 8 extend fromthe jamb 6, in order to afford ample guides for the channel members 17.

Check rails 33 and 34 are cut away at their end adjacent to the partingstrip 9 for a distance approximately equal to the clearance 15. Withthis arrangement, the stile 18 may be pushed manually into the channelmember 17 with sufficient force to depress the resilient member 22; theopposite stile 30 thus being caused to clear the parting strip 11 andthe inner stop 13, so that the sash may be lifted clear of the frame ineither an inward or outward direction, although, as is obvious, if thelower sash 2 is to be lifted outwardly from the frame, the upper sash lfirst must be lifted outwardly from the frame, and, on the other hand,if the upper sash 1 is to be lifted inwardly from the frame, the lowersash 2 first must be lifted inwardly from the frame.

A member 23 with a terminal flange 24 having a slot 25 extends throughan aperture 26 in the stile 18 and extends also through an aperture 27in the resilient member 22. The member 23 is threaded at and adjacent toits end 28, and is fitted with a nut 29 which bears on the resilientmember 22. The member 23, upon being turned, for example, by means of ascrew driver, causes an axial movement of the nut 29, hence a change inpressure on the resilient member 22 by the nut 29. and a correspondingadjustment of tension of the resilient member 22.

A resilient member 3% comprising a thin rectangular sheet of metal issecured to the stile 18 by pins 31, is bent outwardly therefrom andbears lightly on the base portion 20 and the sides 21 of the channelmember 17 so as to prevent a flow of air between the channel member 17and the stile 1%.

With the sashes 1 and 2 in fully raised and fully lowered positions,respectively, i. e., with the window closed, check rails 33 and 34overlap each other, as shown in Fig. 2. Level with this overlap, anextension 32 is secured to the parting strip 9, that projects laterallyapproximately the distance that the check rails are cut away. so as tofit snugly against the check rails 33 and 34 where they are cut away,when the window is closed.

In this fully closed position of the window, in which the sashes 1 and 2may be locked together in the usual manner against vertical movement,the extension 32 of the parting strip 9 stops the checkrails 33 and 34-from being moved horizontally and this prevents the stiles 29 and 3 fromclearing the stops 8 and 13 and the parting strip 11. and hence preventsthe sashes 1 and 2 from being lifted out of the frame as explainedabove. When the sashes 1 and 2 are moved down. and up respectively sothat the checkrails 33 and 34 clear the extension 32, the sashes l and 2are free to be lifted out of the frame as explained.

Movement of the channel member 17 laterally with res ect to the stile 18is limited by arms 42 of plates 43, which extend through openings 44 ofthe sides 21 of the channel member 17, the plates 43 being secured tothe stile 18 by screws 46.

As an alternative construction by which movement of the channel member17 with respect to the stile 18 may be limited, base portion 20 (Fig. 7)of the channel memthe parting strip ber 17 is extended longitudinally ateach of its ends beyond the sides 21, and is turned up at each end toform an end closure 47, in which there is a slot 48. Extending throughthe slot 48 and secured in the stile 18 is a pin having a headv 49 of adiameter somewhat greater than the width of the slot 48.

As an alternative construction, in place of the channel member 17, asabove described, a deep groove 51 (Fig. 9) is cut in the stile 18 forits entire length. A wooden strip 52, the length of the stile 18, and ofcross-section similar to that of the groove 51 is arranged with respectto the groove 51 as hereinafter explained, and is secured against axialand excessive lateral movement with respect to the stile 18 by screws 53(Fig. 8) with heads 54 and shanks 55. The screws 53 are screwed into thestile 18, through holes 5657 bored through the strip 52. The upperportions 56 of said holes are of a diameter slightly larger than theheads 54 of the screws 53, while the lower portions 57 of said holes areof such diameter as to make an easy fit of the shanks 55 of the screws53. Desired latitudinal motion of the strip 52 is had by axial play inthe upper portions 56 of the holes 5657 of the heads 54 of the screws53. The lower portions 56 of the holes 5657 form a stop against theheads 55 of the screws 53.

A thin sheet of resilient material 58 (Fig. 9) is placed between thegroove 51 and the strip 52, tacked to the strip 52, and adapted to formaseal against air currents.

An alternative form 60 of the resilient member 22 as explained above, isshown in Figs. 8 and which has been found to give excellent results,comprises two resilient elements 61 and 62 which are held in swingablerelation to each other by hinge loops 63. Slots 64 are provided in theresilient elements 61 and 62, through which pins 65, with heads 66 aresecuredin the strip 52 to maintain the resilient member 60 and the strip52 in proper relation to each other. A tension adjusting assembly 67corresponds to that shown in Fig. 4, nos. 23-29, as described above.When pressure is applied to the resilient member 60 by the tensionadjusting assembly 67, the resilient elements 61 and 62, using mortiseends 68 as fulcrums, press outwardly away from the stile 18 at theirextremities 69, 70.

As an alternative construction, the holes 56 (Fig. 11) are continuedthrough the stile 18, of uniform diameter, and the screws 53 areprovided with tubular casings 59 of inside diameter to fit about thescrews 54 and allow for free axial movement of the screws 53 in thecasings 59, of outside diameter to fit snugly in the holes 56, and

of a length equal to that of hole portion 57.

The embodiments of the invention shown and described hereinareillustrative only. The invention is not to be understood as limitedbeyond the spirit and intendment of the appended claims.

I claim:

1. A window assembly comprising a window frame having two verticalsides, each side comprising a jamb provided with a parting strip, aninner stop, and an outer stop, an upper and a lower sash having stiles,an elongated channel friction member adjacent a stile of each sashdisposed between the sash and the jamb and having a base portion facingthe stile and resilient side portions slidably embracing the adjacentstile, each channel member being carried'by the adjacent sash, aresilient member under compression between the base portion of eachchannel member and the side of the adjacent stile adapted to resilientlypress the channel member outwardly from the stile and to maintain aclearance between the stile and the base portion of the channel memberover the entire height of the sash while permitting the sash to bepressed laterally toward the channel member by manual pressuresuflicient to compress the resilient member, the parting strip and theinner stop and the outer stop on the side of the sashes remote from thechannel members extending outwardly from the adjacent jamb a distancewhich is less than the distance between'the base portions of the channelmembers and the stiles adjacent'thereto when the channel members arespaced from the stiles to their greatest extent by said resilientmembers, whereby to permit withdrawal 'of the sashes from the frame overthe parting strip and the stops upon lateral displacement of the sashesagainst the resilient member, and means for adjusting the tension oneach resilient member, said means including a shaft passing through theresilient member and the adjacent stile and having a head portion on theinner side of the stile and a threaded end adjacent the resilientmember, and a cooperating member threadedly engaging the shaft andmovable axially thereof upon rotation of the head portion to adjustbearing pressure upon the resilient member, arms extending from thestile, projecting into accommodating slots in the channel member sides,and adapted to prevent longitudinal and limit lateral movement of thechannel member in relation to the stile.

2. In a window assembly according to claim 1, a sheet of flexiblematerial affixed along one of its sides to the stile, extendingdiagonally therefrom to the base portion of the channel member, for thewidth of the opening between the channel member sides, forming acompressible closure of the clearance between the stile and the baseportion of the channel member.

3. In a window assembly according to claim 1, a closure at each end ofthe channel member, a slot in each closure adapted to accommodate a pinsecured in and disposed longitudinally of the stile and adapted toconfine movement of the channel member toward and away from the stile.

4. In a window assembly according to claim 1, a parting strip, a lateralprojection therefrom where checkrails of the lower and upper sashoverlap each other, and accommodating cutouts on checkrails of the upperand lower sashes.

5. A window assembly according to claim 1, wherein a stile of each sashis provided with a mortise adapted to contain the resilient member.

References (Iited in the file of this patent UNITED STATES PATENTSNumber Name Date 141,178 Sprague July 22, 1873 471,939 Boyle Mar. 29,1892 498,991 Ralph et al. June 6, 1893 554,075 Miller Feb. 4, 18961,587,831 Heine June 8, 1926 1,683,355 Hopkins Sept. 4, 1928 1,686,101Oakley Oct. 2, 1928 1,798,187 Brouillette Mar. 31, 1931 1,977,975Schuler Oct. 23, 1934 2,032,726 Storck Mar. 3, 1936 2,093,754 FaurnerSept. 21, 1937 2,288,558 Vose June 30, 1942 2,334,432 Morfy Nov. 16,1943 2,345,806 Glaser et a1 Apr. 4, 1944 2,353,630 Berry July 16, 19442,369,402 Neely Feb. 13, 1945 2,426,474 Trammell et al Aug. 26, 19472,483,005 Hacker Sept. 27, 1949 2,560,139 Taxin July 10, 1951 2,593,258Breuer Apr. 15, 1952 2,595,595 McKay May 6, 1952 FOREIGN PATENTS NumberCountry Date 12,591 Great Britain July 24, 1891

